A household earns $4,000 a month. Housing takes one third of that, groceries cost $520, and utilities cost $310. How much is left over?

Correct answer to question 200 (Arithmetic Reasoning): $1,837

Method

Convert the fraction to dollars before subtracting. Housing is one third of 4,000, about $1,333, and the fixed expenses total 520 + 310 = $830, so 4,000 - 1,333 - 830 leaves about $1,837.